Trovin · July 31, 2019 15:05
diff --git a/WP add classes to main-menu links b/WP add classes to main-menu links
 IN FUNCTIONS.PHP
 ================

 function add_specific_menu_location_atts( $atts, $item, $args ) {
    // check if the item is in the primary menu
    if( $args->theme_location == 'menu-1' ) {
        // add the desired attributes:
        $atts['class'] = 'main-nav__link';
    }
    return $atts;
 }
 add_filter( 'nav_menu_link_attributes', 'add_specific_menu_location_atts', 10, 3 );